Beyond the sprawl of the urban jungle, 150 race teams meet to do battle in the heart of the Mojave Desert in southern California. The format is "run what ya brung" Unlimited 4 Wheel Drive Racing, and the stakes are higher than ever. Only 30% of the teams that take the green flag will make it to the end, the remainder being left strewn across the desert floor in the wake of one of the hardest off road races on the planet, the King of the Hammers. Follow teams in 'Of Grit and Greatness' as they set out to conquer harsh desert at speeds in excess of 100mph, as well as some of the hardest rock crawling North America has to offer, all in an effort to be crowned "King" at the setting of the sun.